Inflation: Where It Comes From, Why 2% Is the Target, and Not Zero

Inflation is one of those words everyone uses and almost nobody fully understands. It is worth getting right — because how you understand inflation determines how you respond to it.

Inflation is the rate at which the general level of prices rises over time. The Consumer Price Index measures it by tracking a basket of goods and services — groceries, rent, energy, healthcare, clothing — and calculating how much more expensive that basket has become year over year. US CPI rose 3.3% in March 2026, with core inflation running at 2.6% (US Bank, 2026). Every dollar you hold is buying 3.3% less than it did a year ago. The money is still there. Its value is not.

Where inflation comes from varies more than most coverage acknowledges. Demand-pull inflation occurs when too much money chases too few goods — the pandemic stimulus arriving in an economy with supply chain disruptions is the clearest recent example. Cost-push inflation occurs when production costs rise — energy shocks, tariffs on imported inputs — and businesses pass those costs to consumers. The current US inflation carries a third, less-discussed driver: the AI infrastructure boom reversed four decades of deflationary pressure from falling semiconductor prices (Federal Reserve Bank of Atlanta, 2026). Each of these requires a different policy response. Treating them identically is a common and costly error.

Why the Fed targets 2% and not 0%: the intuitive answer is that zero inflation would be best — prices stable, purchasing power preserved. The evidence says otherwise. At zero inflation, the Fed has almost no room to cut interest rates during a recession. The 2% target is not a preference for rising prices. It is a buffer that preserves policy flexibility when it matters most — ensuring there is room to lower borrowing costs before hitting zero (Wilcox, via Yahoo Finance, 2024).

The more dangerous scenario is deflation — prices actually falling. When prices fall, consumers delay purchases expecting them to fall further. Businesses sell less. They cut staff. Those workers spend less. Prices fall more. Japan experienced a decade of this in the 1990s. The Great Depression featured sustained deflation. Recovery took years. The Fed targets 2% partly to ensure deflation remains a distant risk rather than a live possibility (Britannica, 2026).

The conventional tool for controlling inflation is raising interest rates. But monetary policy is not the only lever. Supply-side interventions — easing housing construction, investing in energy infrastructure, reducing import barriers — address cost-push inflation at the source. These tools are slower but less economically painful than rate hikes alone.

The Federal Reserve Bank of St. Louis has signalled that persistent above-target inflation throughout 2026 is likely — citing energy shocks, geopolitical risks, and tariff uncertainty (Independent Institute, 2026). No major central bank has called for raising the 2% target. The gap between where inflation is and where policy aims to take it has not closed. Bringing it to 2% without triggering a recession is possible. It is also genuinely uncertain.